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A hearing-impaired child sings during a musical concert in Beijing, capital of China, Jan. 4, 2019. A special concert was held here on Friday to call for more attention to children with hearing impairment. (Xinhua/Li Xin)

A hearing-impaired child sings during a musical concert in Beijing, capital of China, Jan. 4, 2019. A special concert was held here on Friday to call for more attention to children with hearing impairment. (Xinhua/Li Xin)